AOKP to SlimBean??

I've been trying to switch to SlimBean " slim-2.6.0-i897 " and I've not succeeded in doing so. It mentions something about my "\data will be wiped upon installation and that i should run it again to confirm, which i did, and my result was that i was stuck on SEMAPHORE boot screen.

now i'm back on AOKP Milestone 6, which has a terrible battery life, and would like to switch to a SLIM ROM because I've heard good things about it.
Any help would be greatly appreciated.